Standard Abrasives 850034, Unitized Wheel Steel Screw Mandrel, 7/8 in x 1/4 in Shank, 7000121879 
Dynabrade 78589 1/4" Dia. x 2" W x 1/8" Center Hole, 120 Grit, 100/pack 
Insize 4168-S1E, STEEL STANDARD BALLS, 6940561981384
$392.51
To measure angle and diameter of taper holes
Material: tool steel
Hardness: HRC63
Diameter accuracy:?.00012?
Roundness .00004″
Supplied with manufacturer inspection certificate.
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